Lexmark XM3150 User's Guide download pdf (Page 71)

• Do not mix paper sizes, types, or weights in the same tray; mixing results in jams.

• Do not use coated papers unless they are specifically designed for electrophotographic printing.

Selecting preprinted forms and letterhead

Use these guidelines when selecting preprinted forms and letterhead:

• Use grain long for 60 to 90 g/m

(16 to 24 lb) weight paper.

• Use only forms and letterhead printed using an offset lithographic or engraved printing process.

• Avoid papers with rough or heavily textured surfaces.

Use papers printed with heat‑resistant inks designed for use in xerographic copiers. The ink must be able to withstand

temperatures up to 230°C (446°F) without melting or releasing hazardous emissions. Use inks that are not affected by

the resin in toner. Inks that are oxidation‑set or oil‑based generally meet these requirements; latex inks might not.

When in doubt, contact the paper supplier.

Preprinted papers such as letterhead must be able to withstand temperatures up to 230°C (446°F) without melting or

releasing hazardous emissions.

Using recycled paper and other office papers

As an environmentally conscious company, Lexmark supports the use of recycled office paper produced specifically for

use in laser (electrophotographic) printers. In 1998, Lexmark presented to the US government a study demonstrating

that recycled paper produced by major mills in the US fed as well as non-recycled paper. However, no blanket statement

can be made that all recycled paper will feed well.

Lexmark consistently tests its printers with recycled paper (20–100% post-consumer waste) and a variety of test paper

from around the world, using chamber tests for different temperature and humidity conditions. Lexmark has found no

reason to discourage the use of today's recycled office papers, but generally the following property guidelines apply

to recycled paper.

• Low moisture content (4–5%)

• Suitable smoothness (100–200 Sheffield units, or 140–350 Bendtsen units, European)

Note: Some much smoother papers (such as premium 24 lb laser papers, 50–90 Sheffield units) and much

rougher papers (such as premium cotton papers, 200–300 Sheffield units) have been engineered to work very

well in laser printers, despite surface texture. Before using these types of paper, consult your paper supplier.

• Suitable sheet-to-sheet coefficient of friction (0.4–0.6)

• Sufficient bending resistance in the direction of feed

Recycled paper, paper of lower weight (<60 g/m

[16 lb bond]) and/or lower caliper (<3.8 mils [0.1 mm]), and paper

that is cut grain-short for portrait (or short-edge) fed printers may have lower bending resistance than is required for

reliable paper feeding. Before using these types of paper for laser (electrophotographic) printing, consult your paper

supplier. Remember that these are general guidelines only and that paper meeting these guidelines may still cause

paper feeding problems in any laser printer (for example, if the paper curls excessively under normal printing

conditions).

Paper and specialty media guide 71

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Lexmark XM3150 User's Guide Page 71